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Increasing Incidence of Invasive Group A Streptococcus Disease, Idaho, USA, 2008–2019
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9 2022
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Source: Emerg Infect Dis. 2022; 28(9):1785-1795
[PDF-1.24 MB]
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Alternative Title:Emerg Infect Dis
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Description:We investigated invasive group A Streptococcus epidemiology in Idaho, USA, during 2008-2019 using surveillance data, medical record review, and emm (M protein gene) typing results. Incidence increased from 1.04 to 4.76 cases/100,000 persons during 2008-2019. emm 1, 12, 28, 11, and 4 were the most common types, and 2 outbreaks were identified. We examined changes in distribution of clinical syndrome, patient demographics, and risk factors by comparing 2008-2013 baseline with 2014-2019 data. Incidence was higher among all age groups during 2014-2019. Streptococcal toxic shock syndrome increased from 0% to 6.4% of cases (p = 0.02). We identified no differences in distribution of demographic or risk factors between periods. Results indicated that invasive group A Streptococcus is increasing among the general population of Idaho. Ongoing surveillance of state-level invasive group A Streptococcus cases could help identify outbreaks, track regional trends in incidence, and monitor circulating emm types.
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Pubmed ID:35997313
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Pubmed Central ID:PMC9423907
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Volume:28
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Issue:9
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